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DTC P1574: Automatic Speed Control Device Vehicle Speed Sensor: Description

WARNING: This page is about a different car, the 2003 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

ECM receives 2 vehicle speed sensor signals via CAN communication line. One is sent from combination meter, and the other is from Transmission Control Module (TCM). ECM uses these signals for Automatic Speed Control Device (ASCD) control. MIL will not light up for this diagnosis.

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